OK, I'm sure perpetual motion machines come round every so often on Baut, and I'm not trying to start a serious discussion. Just wanted to share this one, as I love the mechanical Heath Robinson-ness of it.
I have gleaned that the two hoops the steel ball rolls on are aluminium.
Oh, and this page about it:
Which includes this intriguing link:
Interview, very brief.
And a longer account of a meeting here:
Any speculation as to how it works?
Somehow harnessing Earth's rotation?
Something about magnets we didn't know before?
Hidden magnets in the base driven by clockwork?